Fix in GlobalSVNRevision cmake macro, remove trailing whitespace

cmake/GlobalSVNRevision.cmake

@@ -2,6 +2,7 @@ EXECUTE_PROCESS( COMMAND "svnversion"
         OUTPUT_VARIABLE GLOBAL_SVN_REVISION
         WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/
         RESULT_VARIABLE _exit_code
+	OUTPUT_STRIP_TRAILING_WHITESPACE
         )
   IF( NOT _exit_code EQUAL 0 )
         MESSAGE( STATUS "Couldn't retrieve a version number from SVN to set in documentation.")